baber/WOPTO huggingface dataset:
Patent GB-803578-A (GB)
Title: Improvements in or relating to switching arrangements
IPC: H03K17/62
Filed: 1957-02-28
Abstract: 803,578. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 28, 1957 [March 3, 1956], No. 6752/57. Class 40 (4). [Also in Group XL (c)] In a transistor switching arrangement a chain of P-N-P transistors T1, T2, T3 is provided with the collector electrode of each connected to the emitter electrode of the next, with negative potential V connected to the collector electrodes and control voltage sources B1, B2, B3 connected to the emitter electrodes. With the sources B1, B2, B3 producing negative potential the transistors T1, T2, T3 are cut off and a signal applied to the input A is transferred via K1 and K5 to receiver S1 ; but if B1 produces a positive potential T1 conducts in its emitterbase circuit and constitutes a short-circuit to earth, so that the signal is not transferred via K5 to S1, but is amplified and appears at the collector electrode, whence it is transferred to S2. Positive potential from B2 and B3 produces similar results. The control voltage sources may be included in the base circuits if desired, provided the internal resistance of the base circuits is kept low, e.g. by shunting the sources by means of capacitors.
Patent GB-1156775-A (GB)
Title: Apparatus for Threading Strip Material Through a Furnace.
Inventor: SMITH FREDERICK CHARLES
IPC: C21D9/56
Filed: 1967-02-13
Abstract: 1,156,775. Threading strip material through furnaces. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 13 Feb., 1968 [13 Feb., 1967], No. 6773/67. Heading F4B. Strip material is initially threaded through a heat treatment furnace, by having a needle and leader strip secured to it, which are then conveyed through the furnace on a series of water or air cooled driven rollers 3, introduced through the side wall 2 of the furnace to provide a conveyer system. When the strip is in the correct position, the rollers 3, each of which is mounted on a travelling carriage 4, are withdrawn from the furnace so causing the strip to take up the catenary form in which it undergoes heat treatment.
Patent GB-1107890-A (GB)
Title: Knitted turkish or terry towelling
IPC: D04B1/02
Filed: 1965-02-17
Abstract: 1,107,890. Knitted fabrics. R. BITZER. 17 Feb.. 1965 [17 Feb., 1964]. No. 6774/65. Heading D1K. The plush loops 15a of Turkish or Terry towelling are formed from threads 15-18 knitted in with basic threads 11-14, the plush loop threads of one row of stitches being firmly entwined in the bases of the stitches and the tops of the adjacent lower row of stitches so that the plush loops extend downwardly at the back of the fabric. Similar or ordinary Terry loops may be provided on the opposite face of the fabric in each row of stitches or in different rows or the loops may be omitted from some rows.
Patent GB-1077042-A (GB)
Title: Improvements in or relating to electric switchgear
Inventor: MADENSKI EDMUND ANTONI
IPC: H01H33/16
Filed: 1964-02-18
Abstract: 1,077,042. Gas blast switches. ENGLISH ELECTRIC CO. Ltd. Feb. 18, 1965 [Feb. 18, 1964], No. 6784/64. Heading H2B. In a double circuit-breaker generally as described in Specification 983,501, the parallel resistors 14, 16 are of different values, resistor 14 being of the order of 20-100 ohms while resistor 16 is of the order of 2000-12,000 ohms. Under severe overload the voltage is unequally divided so that main break 12 clears first inserting the low resistance 14 in series with the other break 13 causing the current to change from reactive to resistive and therefore bringing the current into phase with the voltage so that break 13 clears at the next current zero. Parallel capacitors 18, 19 equalize the voltages after interruption.
Patent GB-1516402-A (GB)
Title: Incinerator
IPC: F23G7/00
Filed: 1975-02-18
Abstract: 1516402 Incinerator P D POLLUTION CONTROL Ltd and HAMWORTHY ENG Ltd 3 Feb 1976 [18 Feb 1975] 6788/75 Heading F4B An incinerator 1 has a combustion chamber 4 with waste material loading door 5, an auxiliary burner 6, liquid waste inlet 7, and combustion air inlets 8. Scraper bars 16 suspended by chains 15 from support arms 14 are rotated by the shaft 11 to agitate material in the furnace to promote effective combustion. The scraper bars have teeth 17 on one edge and a blade 19 on the other edge. An electric motor and gear-box 13 drive the shaft and it can also be reversed. After combustion a slide 10 is withdrawn and the scrapers push the residues into the ashbox 9. Air may be fed from the space 12 through the shaft 11 to outlets 18 to act as cooling air and combustion air for the incinerator.
Patent GB-1369712-A (GB)
Title: Multicontact electrical connector
IPC: H01R13/28
Filed: 1972-02-14
Abstract: 1369712 Two part couplings HUGHES AIRCRAFT CO 14 Feb 1972 [30 March 1971] 6790/72 Heading H2E A connector adapted to mate with an identical counterpart comprises an insert 19 (Fig. 5) in which hermaphroditic bifurcated contacts (20, Fig. 7, not shown) are held by integral resilient tangs in holes 22 which are arranged in equispaced rows and columns as shown. The insert has an axis of symmetry, which is at 90 degrees to the corresponding axis of the other insert when the connectors are mated. Alternate holes 22 in a checkerboard pattern are capped by hollow posts 23, which are close enough together to protect not only the contacts within but also the remaining contacts. The contacts are further protected by two arcuate forwardprojecting shields 35, each extending 90 degrees circumferentially around the insert 19, which mate with the corresponding shields in the other connector to ensure that the inserts 19 mate with their axes of symmetry at 90 degrees. The connectors can mate in two positions to allow connections to be interchanged. Slots (37, Fig. 10, not shown) in each connector accommodate the shields 35 on the other. The insert 19 is oriented in the body (Fig. 10, not shown) by engagement of bosses (75) with slots (73) in a ledge 71, or alternatively may be integral with the body. The mated connectors are locked together by engagement of internal threads 25 of a locking ring 21 on one connector with external threads 24 on the other connector, the ring 21 on the second connector being retracted (Fig. 2, not shown). The connectors are sealed together by ridges 39 containing 0-rings 41. When the connectors are to be disconnected the locking ring 21 is unscrewed and pushes the connectors apart by bearing on a catch 27. The catch 27 can be pushed inwards to allow the ring 21 to be retracted to the inoperative position. When a connector is not mated it is sealed by a dust cover 13, which carries a cap 15 at its rear end. When the connector is mated the cap 15 is used to protect the threads 53 on the dust cover. The cover 15 and cap 13 are attached to the connector by cables 59, 67. The rear end of the connector is sealed by an 0-ring 51 to a cap 43 which is held on by screws 60 and bears on two hemicylindrical spacers 77 which in turn hold the insert 19 in the body. A cable bushing 87 is attached to the rear cap 43 by a compression nut 89. In an alternative embodiment (Fig. 4, not shown) a flexible ring (117) is squeezed on to the cable by means of angled camming surfaces (115, 119) when the compression nut is tightened and the catch 27 and dust cover cap 15 are omitted. The connectors can be limited to only one of the two mating positions by fitting a screw (44, Fig. 10, not shown) which engages a slot (46) in the other connector. The hermaphroditic contacts may be replaced by female contacts in the holes with posts 23 and male contacts in the other holes. Dimensions of the connector body and plastics materials suitable for the various parts are specified.
Patent GB-220581-A (GB)
Title: Improvements in jigs for washing coal, ores, and the like
IPC: B03B5/18
Filed: 1924-03-17
Abstract: 220,581. Wilmot, G. W. March 17, 1924. Check lift valves.-In a jig for washing coal, ores, &c., the underside of the screen is provided with a number of chambers each having valvecontrolled openings through the bottom thereof for controlling the passage of water so that it passes through the screen in one direction only. The valve mechanism comprises plates 30, formed with slots 40 over which are guided hollow cylindrical valve members 46 closed at the ends by plugs and adapted to be adjustably weighted by water or other means; or the plugs may be omitted.
Patent GB-572928-A (GB)
Title: Improvements in or relating to apparatus for delivering measured quantities of powdered material
IPC: G01F11/00
Filed: 1942-05-21
Abstract: 572,928. Delivering measured quantities of powder. BEST, C., and MOLINS MACHINE CO., Ltd. May 21, 1942, No. 6912. [Class 106 (v)] [Also in Group XXI] Apparatus for delivering measured quantities of powdered material, more particularly explosives, comprises a scoop movable through a container to pick up an excess charge of the powder and feed it to a measuring receptacle, the top of which is then swept level; the scoop is constructed so as to loosen all the powder in the container to secure uniform density, and to leave a quantity of powder between itself and the container to avoid dangerous friction. The apparatus comprises a container 16, Fig. 2, into which dip a number of scoops mounted on a rotary shaft 36. The scoops have flared leading parts 35 which stir the powder while leaving a space between the scoops and walls, the flared parts leading to narrow V- section parts 34 discharging into adjustable measuring cavities 46 in a removable bar 47 carried on swinging arms 51 by which the bar is moved to and from its charging and discharging positions. On its way to its discharging position above apertures 66 formed in the enclosing wall of the apparatus, excess powder is swept off the top of the bar by a flexible sweep 62 made of conducting rubber. The bar is rocked and overturned at its discharge position by a pinion 50 thereon engaging a quadrant inside the swinging arm 56 and operated independently thereof. The container is pivotally mounted on a shaft 17 so that it can be emptied into a removable tray 31 and is charged from a partitioned receptacle 151 mounted on a pin 152 and moved by an arm 10 into a position where it can be tilted to discharge its contents into the container. The bullets 178, Fig. 13, to be charged are mounted in carriers 177 in a block 176 and fitted with funnels 181, the block being placed in a longitudinal slide 82, Fig. 12, whence it is moved by hand to a central position where arms 5, Fig. 10, move the block laterally to bring the bullets under the holes 66. After filling, the arms are retracted and the block moved to the left, the surface 78 on which it slides being slightly longer to form a stop and having a renewable part 85 having a distinctively painted section 86 whereby wear may be readily detected. The machine is driven by hand, stop mechanism being provided to ensure correct manipulation.
Patent GB-293668-A (GB)
Title: Improvements in filters for fine filtration of liquids
IPC: B01D29/00
Filed: 1928-03-06
Abstract: 293,668. Petersen, O. March 6, 1928. Strainers comprising grids or gratings.-In apparatus of the type comprising two coaxial members 4, 5, formed with slots or apertures 7, 8 and rotatably adjustable to vary the extent to which the apertures 7, 8 coincide and thus the. size of the straining passages 19, the members 4, 5 are formed with bottoms 9, 10 respectively. Solid matter retained at the straining passages passes down channels 16 formed on one of the members and collects in the space between the bottoms 9, 10. The members, when suitably adjusted, are fixed relatively to one another by a pin 15, and they are enclosed in a casing 1 with a cover 2, inlet connection 18, and outlet connection 20.
Patent GB-101842-A (GB)
Title: Improvements in or relating to Receptacles having Removable Lids or Covers.
Inventor: SHEPHARD HARRY
IPC: B65D43/02
Filed: 1916-05-19
Abstract: 101,842. Shephard, H. May 19, 1916. Lids and covers.-Boxes have lids or covers which are released by pressing or tapping, the bodies having two or more projections 3, Fig. 1, serving as fulcra and seatings or stops for the lid. The fulcra may be constituted by the diametrically opposite extremes of a series of projections extending halfway round the body, or by the ends 7, Fig. 5, of a bead 6. In combination with any of the above forms, the body may have one or more projections 8, which serve as additional seatings for the lid and over which the lid snaps when pressure is applied to remove it. All the projections or beads may be applied to the inside of the lid flange; or the projections or beads constituting the fulcra may be formed on the body and the snap-projections on the lid, or vice versa
Patent GB-374431-A (GB)
Title: Improvements in or relating to terminal connections for electric heating elements
IPC: H05B3/06
Filed: 1931-03-07
Abstract: 374,431. Couplings. IMBERY, A. and BRITISH RESISTOR CO., Ltd., Trafford Park. Manchester. March 7, 1931, No. 7166. [Class 38 (i).] A resistance-heating element 5 provided with end caps 6 has a packing of loose metallic powder 7 introduced between the element and the cap to fill up irregularities in the adjacent surfaces. The caps are shrunk or crimped on to the element, and may be constructed with cooling fins. The metallic powder may be an alloy of aluminium and nickel or, according to the Provisional Specification, of aluminium, nickel, and manganese.
Patent GB-557144-A (GB)
Title: Improvements in followers for latches or locks, and in followers for a combination of locks and latches
IPC: E05B15/00
Filed: 1942-05-29
Abstract: 557,144. Latches. EREBUS MANUFACTURING CO., Ltd., JAMES, J. E., and GLOTHAM, A. May 29, 1942, No. 7273. [Class 44] A latch follower is in three parts one of which is directly operated by the spindle and rotates the others with lost motion, these parts serving to retract the bolt. As shown, the follower comprises a main part C with square axial hole to receive the usual latch spindle, and two members D, D' slidably mounted on the curved surface of part C by collars E with flanges e overlying lateral ribs d' on parts D, D<1>, which are also provided with teeth d, d' engaging racks on runner plates G, G' which serve to retract the bolt B. Part C has a radial arm F adapted to abut against an end of one or other of the parts D, D<1> so that one or other of them may be rotated-with the part C. The arrangement is such that when part C is rotated clockwise part D is operated to move plate G and withdraw the bolt whilst part D' and plate G<1> remain stationary. Opposite rotation operates parts D', G<1> leaving parts D, G stationary. In a modification the teeth are replaced by an arm on each part engaging projections on the bolt tail, one of the arms remaining idle whilst the other is retracting the bolt.
Patent GB-777390-A (GB)
Title: Improvements in or relating to apparatus for uncoiling wire to a processing machine
IPC: B21C47/28
Filed: 1955-03-14
Abstract: 777,390. Unwinding. SPUEHL AKT.-GES. March 14, 1955 [Aug. 12, 1954], No. 7325/55. Class 83 (4). Apparatus for unreeling wire to a wireprocessing machine, comprises a drum 15, supporting the wire coil to be unreeled, rotated by a ratchet disc 14, through adjustable friction pads 16, driven by a pawl 23 on a friction plate 13 in turn driven by a friction wheel 11 adjustably keyed on a shaft 8 rotated by a chain 12 from the wire processing machine. A pawl 19 is also adapted to engage the ratchet disc 14, being disengaged by means 21 when the wire processing machine is in operation. When the apparatus is stopped the inertia of the drum 15 and the coil it supports, overcoming the friction of the pads 16, causes a bulge in the wire supply to develop between the drum and straightening rollers 26, through which the wire passes to the processing machine, which bulge is taken up when the apparatus is restarted owing to the initial inertial lag of the drum 15.
Patent GB-207741-A (GB)
Title: Improvements in centrifugal fans
IPC: F04D29/28
Filed: 1923-03-14
Abstract: 207,741. Melhuish, A. E., (American Blower Co.). March 14, 1923. Casings.-Centrifugal fans are provided with open annular converging nozzle portions extending beyond the delivery ends of the blades and having outwardly diverging discharge edges. Blades q are secured between a disc f, Fig. 1, attached to the usual hub flange e, and a coned disc h, having a flared intake. The blades may be fixed by means of tenons entering recesses in the discs and the number of the blades may be varied with the size of the fan. The blade consists of two straight portions v, x, Fig. 2, at substantially 60‹ to one another, joined by a circular portion w. Relative dimensions for the blades are given. The annular nozzle 1, Fig. 1, is formed by extensions of the discs f, h which converge as shown and terminate in outwardlyflaring discharge lips 5, 6. In a modification, the nozzle is constructed separately and is stationary with respect, to the fan wheels. In a multi-bladed type of fan, the walls 14, 15 of the nozzle converge outwardly and terminate in outwardly-flaring lips 17, 18. The fan is shown mounted for use as a desk fan.
Patent GB-1260828-A (GB)
Title: 2-substituted-3-oxygenated 5-oxycyclopent-1-eneheptanoic acids and esters
IPC: C07C405/00
Filed: 1970-02-17
Abstract: 1,260,828. Cyclopentene derivatives. G. D. SEARLE & CO. 17 Feb., 1970 [17 Feb., 1969], No. 7485/70. Headings C2C and C2P.  Novel cyclopentene derivatives of the Formula I wherein R is H, C 1-7  alkyl, X is> C = O, >CHOH, alkanoyloxymethylene or chloroalkanoyloxymethylase and R<SP>1</SP> is -CHO, styryl or α,#-dichlorophenethyl or a radical of the Formula II wherein R<SP>11</SP> is H or OH, Z is >C = O or > CHOH, and the dotted line indicates an optional 13, 14 double bond and when R<SP>11</SP> is OH and Z is >C=O, the 13,14-bond is saturated, and their preparation. Compounds of Formula I above in which R<SP>1</SP> is styryl, X is >CHOH, alkanoyloxymethylene, or chloroalkanoyloxymethylene, and R is H or C 1-7  alkyl are obtained by cyclizing 14- phenyl -9,12-dioxo-11-hydroxytetradec-13-enoic acid, followed by, if desired, esterification of the hydroxymethylene group with alkanoic or chloroalkanoic acids or derivatives thereof, or conversion of the free acids thus obtained into esters with the appropriate diazoalkanes. Compounds in which R<SP>1</SP> is α,#-dihydroxyphenethyl are made from the corresponding compounds in which R<SP>1</SP> is styryl by hydroxylation and compounds in which R<SP>1</SP> is CHO by cleaving the appropriate glycols thus produced. Compounds of Formula I above in which R<SP>1</SP> is >C = O are obtained by oxidizing the corresponding compounds in which R<SP>1</SP> is >CHOH. Compounds of the above Formula I in which R<SP>1</SP> is a radical of Formula II above are prepared by reacting the appropriate compounds of Formula I in which R<SP>1</SP> is CHO with hexanoylmethylene triphenyl phosphorase or ethyl 3-oxooctanoate to give compounds in which Z is >CO, R<SP>11</SP> is H and a double bond is present in the 13,14- positions, and Z is >CO, R<SP>11</SP> is OH and the linkage between the 13 and 14 C atoms is saturated respectively. Compounds in which Z is >CHOH and a double is present between 13 and 14 C atoms are made by reducing corresponding compounds in which Z is > C = O, and those in which the linkage between the 13 and 14 C atoms is saturated and Z is > CO by reduction of the corresponding 13, 14 double bond compounds. Alternatively compounds in which X is >CO and Z is >CO may be prepared by oxidizing the corresponding compounds in which X is >CHOH. Styrylglyoxal is obtained by oxidizing 4-phenyl- 3-buten-2-one with selenous acid. 14 - Phenyl - 9,12 - dioxo - 11 - hydroxytetradec- 13-enoic acid is obtained by hydrolysing the half potassium salt thereof, prepared by reacting styrylglyoxal with dimethyl 3-oxoundecane- 1,11-dioate.  Hexanoylmethylene triphenyl phosphorane is made by treating triphenyl 2-oxoheptyl phosphonium bromide, obtained by reacting triphenyl methyl phosphonium bromide with nhexanoyl chloride in the presence of n-butyl lithium, with aqueous potassium hydroxide.
Patent GB-497523-A (GB)
Title: Improvements in and relating to the seating means for the rotary valves of internal combustion engines
IPC: F01L7/16
Filed: 1938-03-11
Abstract: 497,523. Valves ; oil engines. BAER, A. March 11, 1938, No. 7654. [Classes 7 (iii) and 7 (vi)] In engines with rotary valves having a seating-member arranged between the cylinder and the valve, the seating-plate bearing against the valve is made up of a number of parts arranged with gaps between each other, and between themselves and the remainder of the seating-member, to check the flow of heat and consequent distortion. The roughness of the contacting surfaces may be sufficient to provide the gaps. Fig. 1 shows a rotary valve 5 arranged above a cylinder 1 with a seating- member 4 interposed, the seating-plate of which is composed of two side parts 8 and a central part 11, gaps being formed at 14, 15 and 16, Fig. 2. The lower part of the seating- member may be of a metal of good heatconductivity, such as aluminium bronze or grey cast iron, in the case of Otto engines, or of a material of poor conductivity, such as porcelain or steatite, in Diesel engines.
Patent GB-794225-A (GB)
Title: Current transformer
IPC: H01F38/30
Filed: 1956-03-12
Abstract: 794,225. Transformers. I-T-E CIRCUIT BREAKER CO. March 12, 1956. [April 28, 1955], No. 7671/56. Class 38 (2). In a current transformer cast epoxy resin 30 is used to secure a toroidal secondary winding 20 to a tube 11 surrounding a primary winding. Insulating tapes with cotton or polyvinyl bases insulate the winding from a laminated core 14. The epoxy resin may be the reaction compound of a polyhalohydrin and a polyphenol, e.g. epichlorhydrin and bis-phenol, and sold as " Araldite " (Registered Trade Mark), " Epon " and " Hysol." Suitable fillers, e.g. slate powder, kaolin, quartz, talcum, silica, mica and suitable amine or acid hardeners, e.g. phthalic anhydride, may be included. The tube 11 is of phenolic kraft paper. Specifications 636,696 and 666,300, [both in Group IV (a)], are referred to.